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Finding the Fourth Proportional to 74,373.19, 111,559.78 and 18,969.19

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Solution

The fourth proportional to 74,373.19, 111,559.78 and 18,969.19 is: 28,453.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,373.19 : 111,559.78 = 18,969.19 : x
  2. Step 2: Convert to fraction form
    74,373.19/111,559.78 = 18,969.19/x
  3. Step 3: Cross multiply
    74,373.19x = 111,559.78 × 18,969.19
  4. Step 4: Simplify right side
    74,373.19x = 2,116,198,407.99
  5. Step 5: Solve for x
    x = 2,116,198,407.99/74,373.19
  6. Step 6: Final answer
    x = 28,453.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.